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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">angle_ll</span><span data-if="c" style="display:none;">angle_ll</span><span data-if="cpp" style="display:none;">AngleLl</span><span data-if="dotnet" style="display:none;">AngleLl</span><span data-if="python" style="display:none;">angle_ll</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">angle_ll</span><span data-if="c" style="display:none;">angle_ll</span><span data-if="cpp" style="display:none;">AngleLl</span><span data-if="dotnet" style="display:none;">AngleLl</span><span data-if="python" style="display:none;">angle_ll</span></code> — Calculate the angle between two lines.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>angle_ll</b>( :  : <a href="#RowA1"><i>RowA1</i></a>, <a href="#ColumnA1"><i>ColumnA1</i></a>, <a href="#RowA2"><i>RowA2</i></a>, <a href="#ColumnA2"><i>ColumnA2</i></a>, <a href="#RowB1"><i>RowB1</i></a>, <a href="#ColumnB1"><i>ColumnB1</i></a>, <a href="#RowB2"><i>RowB2</i></a>, <a href="#ColumnB2"><i>ColumnB2</i></a> : <a href="#Angle"><i>Angle</i></a>)</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>angle_ll</b>(double <a href="#RowA1"><i>RowA1</i></a>, double <a href="#ColumnA1"><i>ColumnA1</i></a>, double <a href="#RowA2"><i>RowA2</i></a>, double <a href="#ColumnA2"><i>ColumnA2</i></a>, double <a href="#RowB1"><i>RowB1</i></a>, double <a href="#ColumnB1"><i>ColumnB1</i></a>, double <a href="#RowB2"><i>RowB2</i></a>, double <a href="#ColumnB2"><i>ColumnB2</i></a>, double* <a href="#Angle"><i>Angle</i></a>)</code></p>
<p>
<code>Herror <b>T_angle_ll</b>(const Htuple <a href="#RowA1"><i>RowA1</i></a>, const Htuple <a href="#ColumnA1"><i>ColumnA1</i></a>, const Htuple <a href="#RowA2"><i>RowA2</i></a>, const Htuple <a href="#ColumnA2"><i>ColumnA2</i></a>, const Htuple <a href="#RowB1"><i>RowB1</i></a>, const Htuple <a href="#ColumnB1"><i>ColumnB1</i></a>, const Htuple <a href="#RowB2"><i>RowB2</i></a>, const Htuple <a href="#ColumnB2"><i>ColumnB2</i></a>, Htuple* <a href="#Angle"><i>Angle</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>AngleLl</b>(const HTuple&amp; <a href="#RowA1"><i>RowA1</i></a>, const HTuple&amp; <a href="#ColumnA1"><i>ColumnA1</i></a>, const HTuple&amp; <a href="#RowA2"><i>RowA2</i></a>, const HTuple&amp; <a href="#ColumnA2"><i>ColumnA2</i></a>, const HTuple&amp; <a href="#RowB1"><i>RowB1</i></a>, const HTuple&amp; <a href="#ColumnB1"><i>ColumnB1</i></a>, const HTuple&amp; <a href="#RowB2"><i>RowB2</i></a>, const HTuple&amp; <a href="#ColumnB2"><i>ColumnB2</i></a>, HTuple* <a href="#Angle"><i>Angle</i></a>)</code></p>
<p>
<code>static <a href="HTuple.html">HTuple</a> <a href="HMisc.html">HMisc</a>::<b>AngleLl</b>(const HTuple&amp; <a href="#RowA1"><i>RowA1</i></a>, const HTuple&amp; <a href="#ColumnA1"><i>ColumnA1</i></a>, const HTuple&amp; <a href="#RowA2"><i>RowA2</i></a>, const HTuple&amp; <a href="#ColumnA2"><i>ColumnA2</i></a>, const HTuple&amp; <a href="#RowB1"><i>RowB1</i></a>, const HTuple&amp; <a href="#ColumnB1"><i>ColumnB1</i></a>, const HTuple&amp; <a href="#RowB2"><i>RowB2</i></a>, const HTuple&amp; <a href="#ColumnB2"><i>ColumnB2</i></a>)</code></p>
<p>
<code>static double <a href="HMisc.html">HMisc</a>::<b>AngleLl</b>(double <a href="#RowA1"><i>RowA1</i></a>, double <a href="#ColumnA1"><i>ColumnA1</i></a>, double <a href="#RowA2"><i>RowA2</i></a>, double <a href="#ColumnA2"><i>ColumnA2</i></a>, double <a href="#RowB1"><i>RowB1</i></a>, double <a href="#ColumnB1"><i>ColumnB1</i></a>, double <a href="#RowB2"><i>RowB2</i></a>, double <a href="#ColumnB2"><i>ColumnB2</i></a>)</code></p>
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<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>AngleLl</b>(<a href="HTuple.html">HTuple</a> <a href="#RowA1"><i>rowA1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnA1"><i>columnA1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowA2"><i>rowA2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnA2"><i>columnA2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowB1"><i>rowB1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnB1"><i>columnB1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowB2"><i>rowB2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnB2"><i>columnB2</i></a>, out <a href="HTuple.html">HTuple</a> <a href="#Angle"><i>angle</i></a>)</code></p>
<p>
<code>static <a href="HTuple.html">HTuple</a> <a href="HMisc.html">HMisc</a>.<b>AngleLl</b>(<a href="HTuple.html">HTuple</a> <a href="#RowA1"><i>rowA1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnA1"><i>columnA1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowA2"><i>rowA2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnA2"><i>columnA2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowB1"><i>rowB1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnB1"><i>columnB1</i></a>, <a href="HTuple.html">HTuple</a> <a href="#RowB2"><i>rowB2</i></a>, <a href="HTuple.html">HTuple</a> <a href="#ColumnB2"><i>columnB2</i></a>)</code></p>
<p>
<code>static double <a href="HMisc.html">HMisc</a>.<b>AngleLl</b>(double <a href="#RowA1"><i>rowA1</i></a>, double <a href="#ColumnA1"><i>columnA1</i></a>, double <a href="#RowA2"><i>rowA2</i></a>, double <a href="#ColumnA2"><i>columnA2</i></a>, double <a href="#RowB1"><i>rowB1</i></a>, double <a href="#ColumnB1"><i>columnB1</i></a>, double <a href="#RowB2"><i>rowB2</i></a>, double <a href="#ColumnB2"><i>columnB2</i></a>)</code></p>
</div>
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<p>
<code>def <b>angle_ll</b>(<a href="#RowA1"><i>row_a1</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnA1"><i>column_a1</i></a>: MaybeSequence[Union[float, int]], <a href="#RowA2"><i>row_a2</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnA2"><i>column_a2</i></a>: MaybeSequence[Union[float, int]], <a href="#RowB1"><i>row_b1</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnB1"><i>column_b1</i></a>: MaybeSequence[Union[float, int]], <a href="#RowB2"><i>row_b2</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnB2"><i>column_b2</i></a>: MaybeSequence[Union[float, int]]) -&gt; Sequence[float]</code></p>
<p>
<code>def <b>angle_ll_s</b>(<a href="#RowA1"><i>row_a1</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnA1"><i>column_a1</i></a>: MaybeSequence[Union[float, int]], <a href="#RowA2"><i>row_a2</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnA2"><i>column_a2</i></a>: MaybeSequence[Union[float, int]], <a href="#RowB1"><i>row_b1</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnB1"><i>column_b1</i></a>: MaybeSequence[Union[float, int]], <a href="#RowB2"><i>row_b2</i></a>: MaybeSequence[Union[float, int]], <a href="#ColumnB2"><i>column_b2</i></a>: MaybeSequence[Union[float, int]]) -&gt; float</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p>该算子 <code><span data-if="hdevelop" style="display:inline">angle_ll</span><span data-if="c" style="display:none">angle_ll</span><span data-if="cpp" style="display:none">AngleLl</span><span data-if="com" style="display:none">AngleLl</span><span data-if="dotnet" style="display:none">AngleLl</span><span data-if="python" style="display:none">angle_ll</span></code> calculates the angle between two lines.
As input the coordinates of two points on the first line
(<a href="#RowA1"><i><code><span data-if="hdevelop" style="display:inline">RowA1</span><span data-if="c" style="display:none">RowA1</span><span data-if="cpp" style="display:none">RowA1</span><span data-if="com" style="display:none">RowA1</span><span data-if="dotnet" style="display:none">rowA1</span><span data-if="python" style="display:none">row_a1</span></code></i></a>,<a href="#ColumnA1"><i><code><span data-if="hdevelop" style="display:inline">ColumnA1</span><span data-if="c" style="display:none">ColumnA1</span><span data-if="cpp" style="display:none">ColumnA1</span><span data-if="com" style="display:none">ColumnA1</span><span data-if="dotnet" style="display:none">columnA1</span><span data-if="python" style="display:none">column_a1</span></code></i></a>,
<a href="#RowA2"><i><code><span data-if="hdevelop" style="display:inline">RowA2</span><span data-if="c" style="display:none">RowA2</span><span data-if="cpp" style="display:none">RowA2</span><span data-if="com" style="display:none">RowA2</span><span data-if="dotnet" style="display:none">rowA2</span><span data-if="python" style="display:none">row_a2</span></code></i></a>,<a href="#ColumnA2"><i><code><span data-if="hdevelop" style="display:inline">ColumnA2</span><span data-if="c" style="display:none">ColumnA2</span><span data-if="cpp" style="display:none">ColumnA2</span><span data-if="com" style="display:none">ColumnA2</span><span data-if="dotnet" style="display:none">columnA2</span><span data-if="python" style="display:none">column_a2</span></code></i></a>) and on the second line
(<a href="#RowB1"><i><code><span data-if="hdevelop" style="display:inline">RowB1</span><span data-if="c" style="display:none">RowB1</span><span data-if="cpp" style="display:none">RowB1</span><span data-if="com" style="display:none">RowB1</span><span data-if="dotnet" style="display:none">rowB1</span><span data-if="python" style="display:none">row_b1</span></code></i></a>,<a href="#ColumnB1"><i><code><span data-if="hdevelop" style="display:inline">ColumnB1</span><span data-if="c" style="display:none">ColumnB1</span><span data-if="cpp" style="display:none">ColumnB1</span><span data-if="com" style="display:none">ColumnB1</span><span data-if="dotnet" style="display:none">columnB1</span><span data-if="python" style="display:none">column_b1</span></code></i></a>,
<a href="#RowB2"><i><code><span data-if="hdevelop" style="display:inline">RowB2</span><span data-if="c" style="display:none">RowB2</span><span data-if="cpp" style="display:none">RowB2</span><span data-if="com" style="display:none">RowB2</span><span data-if="dotnet" style="display:none">rowB2</span><span data-if="python" style="display:none">row_b2</span></code></i></a>,<a href="#ColumnB2"><i><code><span data-if="hdevelop" style="display:inline">ColumnB2</span><span data-if="c" style="display:none">ColumnB2</span><span data-if="cpp" style="display:none">ColumnB2</span><span data-if="com" style="display:none">ColumnB2</span><span data-if="dotnet" style="display:none">columnB2</span><span data-if="python" style="display:none">column_b2</span></code></i></a>) are expected.
The calculation is performed as follows: We interpret the lines
as vectors with starting points
<a href="#RowA1"><i><code><span data-if="hdevelop" style="display:inline">RowA1</span><span data-if="c" style="display:none">RowA1</span><span data-if="cpp" style="display:none">RowA1</span><span data-if="com" style="display:none">RowA1</span><span data-if="dotnet" style="display:none">rowA1</span><span data-if="python" style="display:none">row_a1</span></code></i></a>,<a href="#ColumnA1"><i><code><span data-if="hdevelop" style="display:inline">ColumnA1</span><span data-if="c" style="display:none">ColumnA1</span><span data-if="cpp" style="display:none">ColumnA1</span><span data-if="com" style="display:none">ColumnA1</span><span data-if="dotnet" style="display:none">columnA1</span><span data-if="python" style="display:none">column_a1</span></code></i></a> and
<a href="#RowB1"><i><code><span data-if="hdevelop" style="display:inline">RowB1</span><span data-if="c" style="display:none">RowB1</span><span data-if="cpp" style="display:none">RowB1</span><span data-if="com" style="display:none">RowB1</span><span data-if="dotnet" style="display:none">rowB1</span><span data-if="python" style="display:none">row_b1</span></code></i></a>,<a href="#ColumnB1"><i><code><span data-if="hdevelop" style="display:inline">ColumnB1</span><span data-if="c" style="display:none">ColumnB1</span><span data-if="cpp" style="display:none">ColumnB1</span><span data-if="com" style="display:none">ColumnB1</span><span data-if="dotnet" style="display:none">columnB1</span><span data-if="python" style="display:none">column_b1</span></code></i></a> and end points
<a href="#RowA2"><i><code><span data-if="hdevelop" style="display:inline">RowA2</span><span data-if="c" style="display:none">RowA2</span><span data-if="cpp" style="display:none">RowA2</span><span data-if="com" style="display:none">RowA2</span><span data-if="dotnet" style="display:none">rowA2</span><span data-if="python" style="display:none">row_a2</span></code></i></a>,<a href="#ColumnA2"><i><code><span data-if="hdevelop" style="display:inline">ColumnA2</span><span data-if="c" style="display:none">ColumnA2</span><span data-if="cpp" style="display:none">ColumnA2</span><span data-if="com" style="display:none">ColumnA2</span><span data-if="dotnet" style="display:none">columnA2</span><span data-if="python" style="display:none">column_a2</span></code></i></a> and
<a href="#RowB2"><i><code><span data-if="hdevelop" style="display:inline">RowB2</span><span data-if="c" style="display:none">RowB2</span><span data-if="cpp" style="display:none">RowB2</span><span data-if="com" style="display:none">RowB2</span><span data-if="dotnet" style="display:none">rowB2</span><span data-if="python" style="display:none">row_b2</span></code></i></a>,<a href="#ColumnB2"><i><code><span data-if="hdevelop" style="display:inline">ColumnB2</span><span data-if="c" style="display:none">ColumnB2</span><span data-if="cpp" style="display:none">ColumnB2</span><span data-if="com" style="display:none">ColumnB2</span><span data-if="dotnet" style="display:none">columnB2</span><span data-if="python" style="display:none">column_b2</span></code></i></a>, respectively.
Rotating the vector A counter clockwise onto the
vector B (the center of rotation
is the intersection point of the two lines) yields the angle.
The result depends on the order of the points and on the
order of the lines.
The parameter <a href="#Angle"><i><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></i></a> returns the angle in radians,
ranging from -pi &lt;= <a href="#Angle"><i><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></i></a> &lt;= pi.
</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="RowA1" class="parname"><b><code><span data-if="hdevelop" style="display:inline">RowA1</span><span data-if="c" style="display:none">RowA1</span><span data-if="cpp" style="display:none">RowA1</span><span data-if="com" style="display:none">RowA1</span><span data-if="dotnet" style="display:none">rowA1</span><span data-if="python" style="display:none">row_a1</span></code></b> (input_control)  </span><span>point.y(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Row coordinate of the first point of the first line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ColumnA1" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ColumnA1</span><span data-if="c" style="display:none">ColumnA1</span><span data-if="cpp" style="display:none">ColumnA1</span><span data-if="com" style="display:none">ColumnA1</span><span data-if="dotnet" style="display:none">columnA1</span><span data-if="python" style="display:none">column_a1</span></code></b> (input_control)  </span><span>point.x(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Column coordinate of the first point of the first
line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="RowA2" class="parname"><b><code><span data-if="hdevelop" style="display:inline">RowA2</span><span data-if="c" style="display:none">RowA2</span><span data-if="cpp" style="display:none">RowA2</span><span data-if="com" style="display:none">RowA2</span><span data-if="dotnet" style="display:none">rowA2</span><span data-if="python" style="display:none">row_a2</span></code></b> (input_control)  </span><span>point.y(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Row coordinate of the second point of the first line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ColumnA2" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ColumnA2</span><span data-if="c" style="display:none">ColumnA2</span><span data-if="cpp" style="display:none">ColumnA2</span><span data-if="com" style="display:none">ColumnA2</span><span data-if="dotnet" style="display:none">columnA2</span><span data-if="python" style="display:none">column_a2</span></code></b> (input_control)  </span><span>point.x(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Column coordinate of the second point of the first
line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="RowB1" class="parname"><b><code><span data-if="hdevelop" style="display:inline">RowB1</span><span data-if="c" style="display:none">RowB1</span><span data-if="cpp" style="display:none">RowB1</span><span data-if="com" style="display:none">RowB1</span><span data-if="dotnet" style="display:none">rowB1</span><span data-if="python" style="display:none">row_b1</span></code></b> (input_control)  </span><span>point.y(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Row coordinate of the first point of the second line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ColumnB1" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ColumnB1</span><span data-if="c" style="display:none">ColumnB1</span><span data-if="cpp" style="display:none">ColumnB1</span><span data-if="com" style="display:none">ColumnB1</span><span data-if="dotnet" style="display:none">columnB1</span><span data-if="python" style="display:none">column_b1</span></code></b> (input_control)  </span><span>point.x(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Column coordinate of the first point of the second
line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="RowB2" class="parname"><b><code><span data-if="hdevelop" style="display:inline">RowB2</span><span data-if="c" style="display:none">RowB2</span><span data-if="cpp" style="display:none">RowB2</span><span data-if="com" style="display:none">RowB2</span><span data-if="dotnet" style="display:none">rowB2</span><span data-if="python" style="display:none">row_b2</span></code></b> (input_control)  </span><span>point.y(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Row coordinate of the second point of the second line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="ColumnB2" class="parname"><b><code><span data-if="hdevelop" style="display:inline">ColumnB2</span><span data-if="c" style="display:none">ColumnB2</span><span data-if="cpp" style="display:none">ColumnB2</span><span data-if="com" style="display:none">ColumnB2</span><span data-if="dotnet" style="display:none">columnB2</span><span data-if="python" style="display:none">column_b2</span></code></b> (input_control)  </span><span>point.x(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">MaybeSequence[Union[float, int]]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real / </span><span data-if="hdevelop" style="display:inline">integer)</span><span data-if="dotnet" style="display:none"> (<i>double</i> / </span><span data-if="dotnet" style="display:none">int / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>double</i> / </span><span data-if="cpp" style="display:none">Hlong)</span><span data-if="c" style="display:none"> (<i>double</i> / </span><span data-if="c" style="display:none">Hlong)</span></span>
</div>
<p class="pardesc">Column coordinate of the second point of the second
line.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Angle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></b> (output_control)  </span><span>angle.rad(-array) <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">Sequence[float]</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real)</span><span data-if="dotnet" style="display:none"> (<i>double</i>)</span><span data-if="cpp" style="display:none"> (<i>double</i>)</span><span data-if="c" style="display:none"> (<i>double</i>)</span></span>
</div>
<p class="pardesc">Angle between the lines [rad].</p>
</div>
<h2 id="sec_example_all">例程 (HDevelop)</h2>
<pre class="example">
dev_open_window (0, 0, 512, 512, 'black', WindowHandle)
RowA1 := 255
ColumnA1 := 10
RowA2 := 255
ColumnA2 := 501
gen_contour_polygon_xld (Contour, [RowA1,RowA2], [ColumnA1,ColumnA2])
RowB1 := 255
ColumnB1 := 255
for I := 5 to 360 by 5
  RowB2 := 255 - sin(rad(I)) * 200
  ColumnB2 := 255 + cos(rad(I)) * 200
  gen_contour_polygon_xld (Contour, [RowB1,RowB2], [ColumnB1,ColumnB2])
  angle_ll (RowA1, ColumnA1, RowA2, ColumnA2,\
            RowB1, ColumnB1, RowB2, ColumnB2, Angle)
  AngleDeg := deg(Angle)
endfor
</pre>
<h2 id="sec_result">结果</h2>
<p><code><span data-if="hdevelop" style="display:inline">angle_ll</span><span data-if="c" style="display:none">angle_ll</span><span data-if="cpp" style="display:none">AngleLl</span><span data-if="com" style="display:none">AngleLl</span><span data-if="dotnet" style="display:none">AngleLl</span><span data-if="python" style="display:none">angle_ll</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    .
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="angle_lx.html"><span data-if="hdevelop" style="display:inline">angle_lx</span><span data-if="c" style="display:none">angle_lx</span><span data-if="cpp" style="display:none">AngleLx</span><span data-if="com" style="display:none">AngleLx</span><span data-if="dotnet" style="display:none">AngleLx</span><span data-if="python" style="display:none">angle_lx</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
<!--OP_REF_FOOTER_START-->
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